According to legend, in the late Ming and early Qing dynasties, an immigrant on the way to Sichuan, the broad bean that relied on hunger in the days of rain and mold. I can't bear it, I put it in the field to dry it, and mixed it with fresh peppers. It was so delicious and had a long aftertaste. This is probably the original origin of Shexian Douban.
During the Kangxi reign of the Qing Dynasty (1688 AD), descendants inherited this idea, and opened workshops in Yixian County to take raw materials and clear water from this area. In this way, Douban was mass-produced, which gradually became a climate. In the early years of the Republic of China, the production of Douban in Shexian County had reached a considerable scale, and the tobacco produced in Shexian was exported to all parts of the country. It passed from Chengdu to Chongqing along the Yangtze River to Hunan and Hubei. In the north, Guangyuan was sold to Shaanxi and Gansu. Tobacco sellers from other places are competing to buy Douban to return home to give gifts to friends and relatives. Since then, She County Douban has gained a reputation.
Lixian County is located in the central part of the Chengdu Plain. Due to the benefits of the Dujiangyan irrigation, it is rich in rice, wheat, rapeseed, peas (fava beans), and hemp. The peas here are of good quality. The watercress sauce made with it as the main raw material is oily and red, the petals are crisp, and they have a heavier spicy taste. They are sweet and delicious. In addition to being used for seasoning, they can also be served alone. Cooked with oil, the taste is particularly good.
Douban sauce is rich in protein and vitamins, which can delay arteriosclerosis, reduce cholesterol, promote bowel movements, and increase appetite. Douban sauce is good for qi, spleen, dampness and swelling. At the same time, it contains phospholipid, an important component of brain and nerve tissue, and is rich in choline. In addition, Douban sauce is also one of the anti-cancer foods, which is a good food therapy to reduce the incidence of benign prostatic hyperplasia and bowel cancer.